CVE-2026-126254

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-126254", "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "state": "PUBLISHED", "assignerShortName": "fortinet", "dateReserved": "2026-11-10T20:09:56.646Z", "datePublished": "2026-11-11T21:31:50.608Z", "dateUpdated": "2026-11-12T15:27:36.470Z"}, "containers": {"cna": {"affected": [{"vendor": "Fortinet", "product": "FortiOS", "cpes": ["cpe:2.3:o:fortinet:fortios:8.0.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:8.0.0:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.7:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.5:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.4:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.3:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.0:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.12:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.11:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.10:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.9:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.8:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.7:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.6:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.5:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.4:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.3:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.2:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.13:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.12:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.11:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.10:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.9:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.8:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.7:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.5:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.4:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.3:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.2:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.0:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "versions": [{"versionType": "semver", "version": "8.0.0", "lessThanOrEqual": "8.0.1", "status": "affected"}, {"versionType": "semver", "version": "7.6.0", "lessThanOrEqual": "7.6.7", "status": "affected"}, {"versionType": "semver", "version": "7.4.0", "lessThanOrEqual": "7.4.12", "status": "affected"}, {"versionType": "semver", "version": "7.2.0", "lessThanOrEqual": "7.2.13", "status": "affected"}]}], "descriptions": [{"lang": "en", "value": "A numeric truncation error vulnerability in Fortinet FortiOS 8.0.0 through 8.0.1, FortiOS 7.6.0 through 7.6.7, FortiOS 7.4.0 through 7.4.12, FortiOS 7.2.0 through 7.2.13 may allow a configured ibgp neighbor to send malicious/malformed attributes to all connected routers via a specially crafted request"}], "providerMetadata": {"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "shortName": "fortinet", "dateUpdated": "2026-11-11T21:31:50.608Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-197", "description": "Denial of service", "type": "CWE"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H/E:F/RL:O/RC:C"}}], "solutions": [{"lang": "en", "value": "Upgrade to FortiOS version 8.0.2 or above\nUpgrade to FortiOS version 7.6.8 or above\nUpgrade to FortiOS version 7.4.13 or above\nUpgrade to FortiOS version 7.2.14 or above"}], "references": [{"name": "https://fortiguard.fortinet.com/psirt/FG-IR-26-268", "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-268"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-12T14:23:11.716616Z", "id": "CVE-2026-126254", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-12T15:27:36.470Z"}}]}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:o:fortinet:fortios:8.0.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:8.0.0:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.7:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.5:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.4:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.3:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.6.0:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.12:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.11:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.10:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.9:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.8:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.7:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.6:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.5:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.4:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.3:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.2:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.13:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.12:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.11:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.10:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.9:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.8:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.7:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.5:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.4:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.3:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.2:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.1:*:*:*:*:*:*:*", "cpe:2.3:o:fortinet:fortios:7.2.0:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "product": "FortiOS", "vendor": "Fortinet", "versions": [{"lessThanOrEqual": "8.0.1", "status": "affected", "version": "8.0.0", "versionType": "semver"}, {"lessThanOrEqual": "7.6.7", "status": "affected", "version": "7.6.0", "versionType": "semver"}, {"lessThanOrEqual": "7.4.12", "status": "affected", "version": "7.4.0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.13", "status": "affected", "version": "7.2.0", "versionType": "semver"}]}], "source": "psirt@fortinet.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A numeric truncation error vulnerability in Fortinet FortiOS 8.0.0 through 8.0.1, FortiOS 7.6.0 through 7.6.7, FortiOS 7.4.0 through 7.4.12, FortiOS 7.2.0 through 7.2.13 may allow a configured ibgp neighbor to send malicious/malformed attributes to all connected routers via a specially crafted request"}], "id": "CVE-2026-126254", "lastModified": "2026-11-12T19:14:29.340", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 5.8, "source": "psirt@fortinet.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-126254", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T14:23:11.716616Z", "version": "2.0.3"}}]}, "published": "2026-11-11T22:17:25.490", "references": [{"source": "psirt@fortinet.com", "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-268"}], "sourceIdentifier": "psirt@fortinet.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-197"}], "source": "psirt@fortinet.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.0.1]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.6.0,7.6.7]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.4.0,7.4.12]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.2.0,7.2.13]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FortiOS", "source": "cna", "vendor": "Fortinet"}, "product": "fortios", "vendor": "fortinet"}], "created": "2026-11-12T18:00:06.712998+00:00", "updated": "2026-11-13T16:00:09.927325+00:00", "vendors": ["fortinet", "fortinet$PRODUCT$fortios"]}